Choose an organization scheme You should choose a consistent organization pattern and stick to it. I’m not going to tell you how to organize your style sheets—that depends on what works for you—but here are a few ideas to consider: Organize by selector type. Start with HTML selectors, then IDs, and then classes. Organize based on page structure. Group rules based on their parent tags. This works even better with HTML5 because page structure is stronger. The downside occurs when the same rules need to be applied at different places in the page.